Trolling sinker



FIG. 1 is a front elevational view of a trolling sinker showing my new design;

FIG. 2 is a left end elevational view thereof;

FIG. 3 is a right end elevational view thereof;

FIG. 4 is a top plan view thereof; and

FIG. 5 is a bottom plan view thereof.

The broken line portions are disclosed for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a trolling sinker, as shown and described. 